LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed ...

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

Football didn't cause mass-shooting at NFL offices in New York. But America has addictions to football, guns and violence ...

Shane Tamura, 27, used a rifle identified as an M-4 during the attack at 345 Park Avenue on Monday, police said.

Police say a gunman who killed four people in a Manhattan skyscraper before taking his own life claimed to have a brain ...

Roger Goodell was emotional on Thursday as he publicly addressed the deadly shooting that took place inside 345 Park Avenue, ...

Authorities confiscated several items from a Las Vegas apartment tied to a gunman who used an AR-15-style rifle to kill four ...

Most of the damage was relegated to the 33rd flood, where Shane Tamura accidentally rode the elevator while searching for the NFL headquarters.

NFL commissioner Roger Goodell has offered an important update on the league employee who was shot in Monday's attack.

A Blackstone executive was seemingly a random victim in a mass shooting that left four dead, but some see parallels with the ...